Lubricator.



F. LE ROY.

LUBRICATOR. APPLICATION FILED AU'G.23, 1915.

Patented an. 11, 1916.

W W W entrain s rA rns i ArnNr @FFIQE FRANK-Ln ROY, or DETROIT, MICHIGAN, ssIGNon T0 MICHIGAN LUBRICATOR COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

LUBRICATOR.

Specification of Letters Patent.

Patented J 2111.11, 1916.

Application filed August 23, 1915. Serial No. 46,895.

T 0 all whom it may concern Be it known that I, FRANK Ln ROY, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State Of Michigan, have invented certain new and useful Improvements in Lubricators, of which the following is a spec1fication, reference being had therein to the accompanying drawings.

The invention relates to sight feed lubricators of that type designed for use where there is a pulsating back pressure. lVith such constructions it has been customary to provide a check valve or bafliing device for preventing the back pressure from entering the sight feed and disturbing the formation of the drop.

It is the object of the present invention to obtain an improved construction ofcheck valve or bailling device which is more eflicient in preventing disturbance than constructions heretofore used.

In the drawings: Figure 1 is a central longitudinal section through a portion of a lubricator to which my improvement is applied; and Fig. 2 is a detached perspective view of the check valve.

A is a casing provided With a nipple B for attachment to an explosion engine or other apparatus where there is a periodic back pressure.

(i is the transparent tube of a sight feed, and D the nozzle through which the. oil passes to form they drop.

E is a valve seat formed by a contracted portion in the nipple B, and F is a check valve for cooperating with said seat.

Heretofore it has been usual to employ a ball check cooperating with the seat to prevent the back pressure. ever, as the inertia of the ball temporarily delays its seating, there will be a puff of back pressure passing into the sight feed before the closing of the valve, and this frequently disturbs the drop. .I have overcome this difficulty by substituting for the usual ball check a valve having a deflector portion for intercepting the puff of back pressure. This deflector performs a double function, first, in that it prevents the impingement of the back pressure directly upon the drop. and second, that it eXpedites the closing of the valve and reduces the Inasmuch, h owamount of back pressure admitted to the minimum.

In detail the valve F is provided with a conical portion G for engaging the seat E, and above this conical portion a flaring portion H forms the deflector. The bottom I of the valve is preferably of an area considerabiy in excess of that of the port and a recess J' is formed therein to reduce the weight of the material and also to form a pocket. This construction offers a much greater resistance to the back pressure than the round ball and consequently inertia is more quickly overcome.

In Operation, Whenever there is a pulsation of back pressure the valve F Will be lifted from its normal support, such as the pin K, and will be moved to its seat. The large area and recessed form of the bottom of the'valve causes it to be quickly lifted to its seat, and the slight escape of pressure during the lag of the valve will impinge against the flaring portion H and further assist in closing the valve. The portion H deflects the fluid to the sides of the casing A and thus prevents direct impingement against the drop.

What I claim as my invention is:

1. In a lubrioator, the combination with the sight feed chamber and a stationary drop-forming nozzle, of a back pressure battle at the bottom of said chamber, comprising a valve seat below said nozzle, a conical valve for engag'ng said seat, and a reversed cone Or flaring portion above said seat, for the purpose described.

2. In a lubrlcator, the combination With the sight-feed chamber and a stationary drop-forming nozzle, of a back-pressure baflle at the bottom of said chamber, comprising a valve seat below said nozzle, a valve having a portion for engaging said seat, and a deflector portion above said seating portion. 1

3. In a lubricator, the combination with the s ght-feed chamber and a stationary drop-forming nozzle, of a .back-pressure bailie at the bottom of said chamber, com prising a valve seat below said nozzle, a valve for engagingsaid seat having a conical seating portion, a recessed bottom portion of greater area and a flaring top for the purpose described.

4. In a lubricator, the combination With said chamber beneath said valve for supthe sight feed chamber and a stationarv porting the same When unseated. 1o drop-forming nozzle, of a back-pressure In testimony whereof I afiix my signature baffle at the bottom of said chamber, comin presence of tWo Witnesses.

5 prising a valve seat below said nozzle, a FRANK LE ROY.

valve having a portion for engaging said Witnesses: seat and a deflector portion above said seat- JULIAN DICKINSON, ing portion, and means located exterior to ROBERT L. SCHLERETH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents- Washington, D. C. 

